rkt is really a fundamentally different architecture and approach than Docker, but more importantly a large unmaintained code base. k3c is really a fairly light

rkt is really a fundamentally different architecture and approach than Docker, but more importantly a large unmaintained code base. k3c is really a fairly light layer on top of CRI, containerd and buildkit. So the maintenance burden is very low and quality should be high given it's using the same technology as production Kubernetes clusters.